APA Style

Gallagher, B. (2018). How to Turn Down a Billion Dollars: The Snapchat Story (‎ February 13, 2018). New York, United States: ‎ St. Martin\'s Press.

MLA Style

Gallagher, Billy. "How to Turn Down a Billion Dollars: The Snapchat Story". ‎ February 13, 2018 New York, United States: ‎ St. Martin\'s Press, 2018. Text.